/**
 * Copyright © 2016-2025 The Thingsboard Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.thingsboard.common.util;

import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;

import java.util.concurrent.TimeUnit;

public class SetCache<K> {

    private static final Object DUMMY_VALUE = Boolean.TRUE;

    private final Cache<K, Object> cache;

    public SetCache(long valueTtlMs) {
        this.cache = Caffeine.newBuilder()
                .expireAfterWrite(valueTtlMs, TimeUnit.MILLISECONDS)
                .build();
    }

    public void add(K key) {
        cache.put(key, DUMMY_VALUE);
    }

    public boolean contains(K key) {
        return cache.asMap().containsKey(key);
    }

    public void remove(K key) {
        cache.invalidate(key);
    }

}
